[PATCH net 1/2] vsock: add half-closed socket details in the implementation notes

Stefano Garzarella
2019-10-11T13:08:20Z

vmci_transport never allowed half-closed socket on the host side.
Since we want to have the same behaviour across all transports, we
add a section in the "Implementation notes".

Cc: Jorgen Hansen <jhansen@vmware.com>
Cc: Adit Ranadive <aditr@vmware.com>
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
---
net/vmw_vsock/af_vsock.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/net/vmw_vsock/af_vsock.c b/net/vmw_vsock/af_vsock.c
index 2ab43b2bba31..27df57c2024b 100644
--- a/net/vmw_vsock/af_vsock.c
+++ b/net/vmw_vsock/af_vsock.c
@@ -83,6 +83,10 @@
* TCP_ESTABLISHED - connected
* TCP_CLOSING - disconnecting
* TCP_LISTEN - listening
+ *
+ * - Half-closed socket is supported only on the guest side. recv() on the host
+ * side should return EOF when the guest closes a connection, also if some
+ * data is still in the receive queue.
*/

#include <linux/types.h>
--
2.21.0